Arrangement in a winding machine for soft ribbon



Oct. 28, 1969 K, ERLANDSSQN 3,474,979

ARRANGEMENT INA WINDING MACHINE FOR SOFT RIBBON Filed Sept. 1, 1967 2Shee'tsSheet 1 a 8 2 E J" 8 R m Nw -l|i| 2 ii i I Fl. 3 2 NM Pm Q. 3 mwmm PN oqmm m. u 8 mm E NP m 8 8 mm 2 m N mm mm .w P P S Q mw 1i 8 5 m mm N 5 NW 8 .8 mu 3 B 8 BE 3 HTL om Oct. 28, 1969 K. 5. ERLANDSSON3,474,979

ARRANGEMENT IN A WINDING MACHINE FOR SOFT RIBBON 2 Sheets-Sheet 2 FiledSept. 1. 1967 United States Patent 3,474,979 ARRANGEMENT IN A WINDINGMACHINE FOR SOFT RIBBON Karl Gunnar Erlandsson, Kumla, Sweden, assignorto Aktiebolaget Bandindustri, a Swedish joint-stock company Filed Sept.1, 1967, Ser. No. 665,153 Claims priority, application Sweden, Nov. 14,1966, 15,540/66 Int. Cl. B65h 75/00 US. Cl. 242-61 4 Claims ABSTRACT OFTHE DISCLOSURE Fully automatic machine for winding textile ribbon or thelike on card-board card or the like. The machine is easily and reliablyadjustable to different ribbon widths, different numbers of windingrevolutions and different number of winding steps by members of theplug-in type. The machine is provided with a gripping member adaptedautomatically to draw the tail end of the ribbon between the card andthe ribbon wound on the card subsequent to the ejection of the card andthe cutting of the ribbon.

This invention relates to an arrangement in a machine for winding aribbon, such as a textile ribbon, on a cardboard card or the like. Themachine comprises a cyclically rotating main shaft with clamping meansat the outer end for a card supplied by a card feeding device at thebeginning of a cycle, means for ejecting the card preferably in theshaft direction at the end of a cycle, and a cutting device for theribbon.

The invention is characterized by a control device operatingstep-by-step which by a revolution counter counting the revolutions ofthe main shaft is actuated to control in steps and successively thewinding of the ribbon on the card in the shaft direction, saidrevolution counter and control device being provided with readilyexchangeable members, such as cams for adjusting the number ofrevolutions and the number of steps respectively. The cams for therevolution counter according to the invention can be designed as maltesewheels with a different number of radial slots.

The arrangement comprises according to the invention advantageouslymeans for clamping the front end of the ribbon against the inner end ofthe card, the ribbon thereby being wound outwardly, and a grip memberfor the tail end of the ribbon, which member preferably consists ofhook-shaped outer end of a needle extending in parallel with the mainshaft adjacent the upper surface of the card, said needle being fastenedon a gripping shaft which is concentric with the main shaft and somewhatrotatable in relation to the main shaft, the cam of the control devicebeing arranged for an extended final step movement, and the controldevice by a guide means preferably actuating a guiding passage or thelike for the ribbon, in such a manner, that the guiding passage at thebeginning of the cycle is located adjacent the card, but at the finalstep movement is moved to the side away from the card, at the same timeas the gripping member by a temporary relative rotary motion of thegripping shaft in relation to the main shaft is caused to enclose theribbon and retain it against the card, which ribbon thereafter is cutoff by the cutting device, thereafter upon the ejection of the card thetail end of the ribbon is retained by the gripping member and therebydrawn in between the card and the ribbon wound on the card.

In conventional machines for winding ribbon on cardboard cards or thelike, the adjustment to diflerent numbers of winding revolutions anddifferent ribbon widths is very complicated and time-consuming. As thesemachines are not automatic, either, they involve considerableexpenditures for labour.

A ribbon Winding machine according to the invention, however, can beadjusted rapidly and simply to different numbers of winding revolutionsin radial as well as axial direction, and to different ribbon widths.This machine also offers great safety against an unintentional actuationof the adjusting means during the treatment of a consignment.

A ribbon winding machine according to the invention also constitutes aribbon packaging machine which is fully automatic and safe in operation,with all the economical advantages offered thereby.

The invention is described in a greater detail in the following, withreference to the accompanying drawings which by way of example show in aschematic manner an embodiment of the invention.

FIG. 1 shows schematically the ribbon winding machine according to theinvention as seen from above.

FIG. 2 shows an arrangement with a maltese wheel having four radialslots, as seen in the direction II-II in FIG. 1.

Fig. 3 shows in a corresponding manner as FIG. 2 an arrangement with amaltese wheel having six radial slots.

FIG. 4 shows a control device for a ribbon guiding passage as seen inthe direction IV--IV in FIG. 1.

FIG. 1 shows a periodically rotating main shaft 1 having clamping means2 on its outer end for a card-board card 3 which in the direction of thearrow B is supplied by a card feeding device 4 to the main shaft thenstanding still, The main shaft rotates in clockwise direction, as seenfrom the right in FIG. 1, and is driven by shaft 28 through bevel gears29 and 30. A compressed air cylinder 5 with a piston rod '6 constitutesa means for ejecting the card 3 in the direction of the arrow A. Ashearing device for cutting olf the ribbon comprises a shear blade 7mounted on the piston rod 8 of a compressed air cylinder 9, and a shearblade 10 actuated by the rod 11.

The ribbon is supplied in the direction of the arrow C through a guidingpassage 12 which is provided with a locking member (not shown)preventing the return travel of the ribbon. The guiding passage ismounted on a rod 13 which is fastened on a rod 14 with a head 15, whichhead in a simply detachable way is connected with a cam 16. The cam 16is also in a simply detachable manner connected with the head 17 on thepiston rod 18 of a compressed air cylinder 19. Said cylinder 19 and thecam 16 constitute a step-by-step operating control device for theguiding passage 12, in that teeth 20 and 21 on slides 22 and 23respectively alternatingly engage in chamfered recesses 24, 25, 26 ofequal size and equal spaced relationship, which recesses are formed in asurface of the cam 16. When by action of a compressed air cylinder 19the cam by moving in steps to the right in FIG. 1 has reached the pointwhere the tooth 21 has arrived at the recess 27 of the cam, the controldevice can perform an extended final step movement until the end of therod 14 strikes against the end of a piston rod 31 of a compressed aircylinder 32,

As already mentioned, the cam 16 is simply detachable and can thereby beexchanged with other cams with a different number of recesses,corresponding to the number of winding revolutions in the direction ofthe main shaft for winding a ribbon on a card 3. The tooth 20 isfastened on the slide 22 by two screws 33 extending in a groove in thetooth. The distance between the recesses in the cam 16 (for example therecesses 24, 25, 26) is different for different ribbon widths, and tooth20 must then be adjusted to a position corresponding to this distance,in such a manner, that the distance between the teeth must be somewhatsmaller than the distance between two recesses (24, 25, 26).

The slide 22 is connected with the piston rod 34 of a double-actingcompressed air cylinder 35. Upon the downward movement in FIG. 1 theslide 22 forces the slide 23 to move upwards due to the presence of alever 36 which is mounted on a journal 40 and actuates the journals 37and 38 fastened in the slides 22 and 23. The The slide 23 is alsoactuated by the spring 29 to move downwards in FIG. 1.

The piston in the double-acting compressed air cylinder 35 is actuatedvia the lines 41 and 42 by compressed air from the four-way valve 43which receives compressed air at P and is controlled by pressureimpulses from the line 44 acting against a spring (not shown).

The line 44 receives compressed air impulses from a valve 45 which isfed through a compressed air line P and opened by the action of a cam 46on the shaft 47 of a revolution counter which counts the revolutions ofthe main shaft 1.

The revolution counter comprises a maltese wheel 50 mounted on a journal48 and a follower pin 49 mounted on the shaft 47, which wheel in amanner known per se is turned stepwise about a journal 51 which isconnected with a disc 52 in rigid connection with the main shaft 1, saiddisc being provided with a recess 53.

If the maltese wheel 50 according to FIG. 2 is provided with four radialslots 56, the valve 45 sends a feed impulse to the compressed aircylinder 35 of the control device at every fourth revolution of the mainshaft 1.

The maltese wheel 50 can be provided with a different number of radialslots, as for example a star wheel 50 according to FIG. 3 has six suchslots 56' whereby a feed impulse to the compressed air cylinder 35 ofthe control device is sent at every sixth revolution of the mainshaft 1. The number of radial slots in different maltese wheels mayvary, for example, between four and eleven.

The maltese wheel 50 is easy to replace, in which connection also thedisc 52 with the journal 51 are exchanged at the same time, which iscarried out in that the disc is divided and mounted on a disc 54 on themain shaft 1 by Screws 55.

A card 3 discharged from the card feeding device 4 is retained by aclamping member 2 connected with the main shaft 1. For clamping thefront end of the ribbon against the inner end of the card 3, a yoke 58is provided which is connected with the main shaft through theintermediary of a pivotal connection about shaft 159. An angular lever160 or the like connected with the yoke 58 keeps the yoke 58 against thecard 3 by a spring (not shown). The angular lever 160 is actuated bymeans (not shown) to move the yoke 58, for example, through an angle of60 from its original position, the movement of the yoke 58 beingarranged to take place when the guiding passage of the ribbonsubstantially has the position 12' as shown in FIG. 1, and the yoke 58is again urged against the card 3 when the guiding passage of the ribbonhas a position corresponding to 12 in FIG. 1. In position 12 the ribbonguiding passage is located substantially higher than in position 12,which is achieved in that the rear end 59 of the rod 13 moves in a part60 of a slot 61 in a control device 63 which is adjustably mounted byscrews 62 in longitudinal direction on the machine, see also FIG. 4.

At the end of the gripping shaft 64 mounted concentrically in the mainshaft 1, a gripping member 65 in the form of a hook resting against thecard 3 is fastened on the end of a needle 66. The gripping shaft, bymeans not shown, is adapted upon the final step movement of the controldevice temporarily to turn the gripping member 65 in relation to themain shaft 1.

The arrangement operates in the manner as follows.

The main shaft 1 is caused by suitable means to perform during a cycle acertain number of full revolutions, corresponding to the number ofribbon winding revolutions, the corresponding adjustment having beenmade on the revolution counter and the control device, whereafter themain shaft comes to a standstill in the position shown in FIG. 1.Subsequent to the stopping of the machine and the ejection of the card 3by the cylinder 5 and rod 6, the card feeding device 4 inserts a newcard 3 below the clamping member 2 whereafter during the return movement(to the left in FIG. 1) of the control device the ribbon end is clampedon the left-hand side of the card below the yoke 58, the cam 46 of therevolution counter then being in such a position that the tooth 20 ismaintained in lifted position.

When the control device has arrived at its left-hand final position, inwhich position the tooth 21 descends into the recess 24, the main shaft1 starts to rotate whereby the application of a maltese wheel with fourradial slots brings about the effect that first four ribbon turns arewound radially on the card 3 whereafter the control device performs adisplacing movement by one step to the right, and four new ribbon turnsare wound radially on the card to the right of the first-mentionedturns, and after a further displacing movement by the control deviceanother four ribbon turns are wound. When the tooth 24 of the controldevice has arrived at the recess 27, the control device performs a finalstep movement of greater length to the right, at the same time as themain shaft 1 comes to a standstill in the position shown in FIG. 1,whereby the ribbon guiding passage 12 is lifted and the gripping member65 encloses the ribbon and by a turning motion retains the ribbonagainst the card 3, whereafter the cylinder 9 moves the shear blade 7close to the ribbon which automatically is cut off by a pulling motionto the left of the rod 11. The card 3 is thereafter ejected by thecylinder 5 and rod 6, the tail end of the ribbon being retained by thegripping member 65 and thereby drawn between the card and the ribbonwound on the card 3.

The above-described cycle is thereafter repeated automatically.

The described cycles can be effected automatically in such a manner,that one cycle gives an impulse to the next cycle. A plurality of cyclesand also the whole working cycle can be controlled advantageously by thecontrol device according to the invention.

What I claim is:

1. An arrangement in a machine for winding a thread or a ribbon, such asa textile ribbon, on a cardboard card or the like, the machinecomprising a cyclically rotating main shaft including clamping means atthe outer end thereof for receiving a card supplied by a card feedingdevice at the beginning of a cycle, means for ejecting the card from theclamping means at the end of a cycle, a cutting device for the ribbon, astep-by-step operating control device to control the winding of theribbon on the card in steps and successively in the shaft direction, anda revolution counter for counting the revolutions of the main shaft,said counter being coupled to the operating control device to actuatethe same, the revolution counter and the control device being providedwith exchangeable means for adjusting the number of revolutions per stepand the number of steps respectively.

2. An arrangement in a machine for winding a thread or a ribbon, such asa textile ribbon, on a cardboard card or the like, the machinecomprising a cyclically rotating main shaft including clamping means atthe outer end thereof for receiving a card supplied by a card feedingdevice at the beginning of a cycle, a means for ejecting the card fromthe clamping means at the end of a cycle, a cutting device for theribbon, a step-by-step operating control device to control the windingof the ribbon on the card in steps and successively, a revolutioncounter for counting the revolutions of the main shaft, said counterbeing coupled to the operating control device to actuate the same, saidclamping means clamping a first end of the ribbon against the inner endof the card, the ribbon thereby being wound outwardly, a gripping memberfor the tail end of the ribbon comprising a needle extending parallel tothe main shaft and close to the surface of the card, said needle havingan outer end with a hook-shaped end, and a gripping shaft concentricwith the main shaft and somewhat rotatable in relation to the mainshaft, said needle being fastened to said gripping shaft, a guide memberhaving a guide passage for the ribbon, said control device being coupledto said guide member to displace the same stepwise and in successionrelative to the card, said control device having an extended final stepmovement, and a guide means for said guide member to cause the guidepassage at the beginning of a cycle to be located adjacent the card,whereas at the final step movement the passage is moved away from thecard while simultaneously the gripping shaft undergoes a temporaryrelative motion in relation to the main shaft so that the grippingmember retains the ribbon against the card, which ribbon subsequently iscut by the cutting device, whereafter upon the ejection of the card thetail end of the ribbon wound on the card is retained by the grippingmember and thereby is drawn between the card and the ribbon wound on thecard.

3. The arrangement according to claim 1, wherein the exchangeable meansfor the revolution counter comprises a maltese wheel.

4. The arrangement according to claim 3, wherein said maltese wheel isprovided with a plurality of radial slots, at least four in number.

References Cited UNITED STATES PATENTS 2,554,855 5/1951 Creed 242- 5o2,699,298 1/1955 Canet 242-61 LEONARD D. CHRISTIAN, Primary Examiner US.01. X.R. 33-137

